Cryogenic Air Separation Plant Suppliers in China - High-Purity N₂, O₂, and Liquid Argon from Factory
I. Small Cryogenic Air Separation Unit — Technical Specifications
| Model | KDON-50/50 | KDON-80/160 | KDON-180/300 | KDON-260/500 | KDON-350/700 | KDON-550/1000 |
|---|---|---|---|---|---|---|
| O₂ Output Nm³/h | 50 | 80 | 180 | 260 | 350 | 550 |
| O₂ Purity %O₂ | ≥99.6 | ≥99.6 | ≥99.6 | ≥99.6 | ≥99.6 | ≥99.6 |
| N₂ Output Nm³/h | 50 | 160 | 300 | 500 | 700 | 1000 |
| N₂ Purity ppm O₂ | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 |
| Unit Energy KWh/Nm³O₂ | ≤1.3 | <0.85 | ≤0.68 | ≤0.65 | ≤0.65 | ≤0.65 |
| Footprint m² | 145 | 150 | 160 | 180 | 250 | 420 |
II. High-Purity Nitrogen (Cryogenic) Unit — Technical Specifications
| Model | KDN-200 | KDN-300 | KDN-400 | KDN-700 | KDN-1000 | KDN-1600 |
|---|---|---|---|---|---|---|
| N₂ Output Nm³/h | 200 | 300 | 400 | 700 | 1000 | 1600 |
| N₂ Purity ppm O₂ | ≤3 | ≤3 | ≤3 | ≤3 | ≤3 | ≤3 |
| LN₂ Output L/h | / | 10 | 10 | 20 | 40 | 60 |
| N₂ Pressure MPa | 0.34~1 | 0.34~1 | 0.34~1 | 0.34~1 | 0.34~1 | 0.34~1 |
| Footprint m² | 95 | 150 | 220 | 260 | 300 | 320 |
III. Liquid Cryogenic / Liquefaction Unit — Technical Specifications
| Model | KDO-180y | KDO-250y | KDO-400y | KDON-1200y/300y | KDONAr-1300y/200y/40y |
|---|---|---|---|---|---|
| LO₂ Output Nm³/h | 180 | 400 | 400 | 1200 | 1300 |
| LO₂ Purity % | ≥99.6 | ≥99.6 | ≥99.6 | ≥99.6 | ≥99.6 |
| LO₂ Pressure MPa | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| LN₂ Output Nm³/h | — | — | — | 300 | 200 |
| LN₂ Purity PPm O₂ | — | — | — | ≤5 | ≤5 |
| LN₂ Pressure MPa | — | — | — | 0.5 | 0.5 |
| LAr Output Nm³/h | — | — | — | — | 40 |
| LAr Purity | — | — | — | — | ≤1.5ppm O₂+4ppm N₂ |
| LAr Pressure MPa | — | — | — | — | 0.2 |
| Footprint m² | 250 | 300 | 350 | 850 | 4000 |
IV. Physical Properties of Air Components (Table 1) — Composition
| Component | Symbol | Volume Fraction % | Weight Fraction % |
|---|---|---|---|
| Nitrogen | N₂ | 78.084 | 75.5 |
| Oxygen | O₂ | 20.95 | 23.1 |
| Argon | Ar | 0.932 | 1.29 |
| Carbon Dioxide | CO₂ | 0.035 | 0.05 |
| Helium | He | 0.00046 | 0.00006 |
| Neon | Ne | 0.0016 | 0.0011 |
| Krypton | Kr | 0.00011 | 0.00032 |
| Xenon | Xe | 0.000008 | 0.00004 |
V. Physical Properties of Air Components (Table 2) — Physical Data
| Component | Symbol | Boiling Pt. ℃ | Melting Pt. ℃ | Gas Density Kg/m³ | Liquid Density Kg/L | Critical Temp. ℃ | Critical Pressure MPa(G) |
|---|---|---|---|---|---|---|---|
| Nitrogen | N₂ | -195.8 | -209.86 | 1.2506 | 0.81 | -147 | 3.45 |
| Oxygen | O₂ | -183 | -218.4 | 1.4289 | 1.14 | -119 | 5.13 |
| Argon | Ar | -185.7 | -189.2 | 1.784 | 1.4 | -122 | 4.959 |
| Helium | He | -268.9 | -272.55 | 0.18 | 0.125 | -267.7 | 0.2335 |
| Neon | Ne | -246.1 | -248.6 | 0.748 | 1.204 | -228.7 | 2.813 |
| Krypton | Kr | -153.2 | -157.2 | 1.735 | 2.155 | -63.7 | 5.6 |
| Xenon | Xe | -108 | -111.8 | 1.664 | 3.52 | 16.6 | 6.01 |
Frequently Asked Questions (FAQ)
QWhat is the purity of Oxygen and Nitrogen produced by Cryogenic Air Separation Units?
According to the technical specifications, our Small Cryogenic Air Separation Units achieve an Oxygen (O₂) purity of ≥99.6%. High-Purity Nitrogen Units can reach extreme purities with Oxygen content restricted to ≤3 ppm or ≤10 ppm depending on the configuration.
QHow do gaseous and liquid cryogenic liquefaction units differ?
Gaseous separation units primarily output gas-phase Oxygen and Nitrogen for immediate pipeline use or localized storage. Liquid Cryogenic/Liquefaction units (such as the KDO-y models) produce liquid products (LO₂, LN₂, LAr) at extremely low temperatures, which are ideal for high-density storage and long-distance transport.
QWhat are the typical footprint requirements for installing these units?
The physical footprint varies significantly based on capacity. Small high-purity nitrogen units can require as little as 95 m² (KDN-200), whereas high-capacity liquid liquefaction units producing multiple elements (like the KDONAr-1300y/200y/40y) can require up to 4000 m² of space.
QWhat is the energy consumption of a Cryogenic Air Separation Unit?
The specific power consumption decreases as the unit size increases. For smaller units like the KDON-50/50, the unit energy is ≤1.3 KWh/Nm³O₂. For larger models such as the KDON-550/1000, energy efficiency improves significantly to ≤0.65 KWh/Nm³O₂.
QWhy are the boiling points of air components critical to cryogenic separation?
Cryogenic separation relies on fractional distillation, which exploits the differences in boiling points of air components. For instance, Nitrogen boils at -195.8℃, Argon at -185.7℃, and Oxygen at -183℃. By cooling air to extreme liquefaction temperatures, these components can be precisely separated based on their boiling thresholds.
